Fri, 07 Jan 2011 10:42:32 -0500
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
Summary: Track allocated bytes in Thread's, update on TLAB retirement and direct allocation in Eden and tenured, add JNI methods for ThreadMXBean.
Reviewed-by: coleenp, kvn, dholmes, ysr
1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
25 #ifndef CPU_X86_VM_ASSEMBLER_X86_INLINE_HPP
26 #define CPU_X86_VM_ASSEMBLER_X86_INLINE_HPP
28 #include "asm/assembler.inline.hpp"
29 #include "asm/codeBuffer.hpp"
30 #include "code/codeCache.hpp"
31 #include "runtime/handles.inline.hpp"
33 inline void MacroAssembler::pd_patch_instruction(address branch, address target) {
34 unsigned char op = branch[0];
35 assert(op == 0xE8 /* call */ ||
36 op == 0xE9 /* jmp */ ||
37 op == 0xEB /* short jmp */ ||
38 (op & 0xF0) == 0x70 /* short jcc */ ||
39 op == 0x0F && (branch[1] & 0xF0) == 0x80 /* jcc */,
40 "Invalid opcode at patch point");
42 if (op == 0xEB || (op & 0xF0) == 0x70) {
43 // short offset operators (jmp and jcc)
44 char* disp = (char*) &branch[1];
45 int imm8 = target - (address) &disp[1];
46 guarantee(this->is8bit(imm8), "Short forward jump exceeds 8-bit offset");
47 *disp = imm8;
48 } else {
49 int* disp = (int*) &branch[(op == 0x0F)? 2: 1];
50 int imm32 = target - (address) &disp[1];
51 *disp = imm32;
52 }
53 }
55 #ifndef PRODUCT
56 inline void MacroAssembler::pd_print_patched_instruction(address branch) {
57 const char* s;
58 unsigned char op = branch[0];
59 if (op == 0xE8) {
60 s = "call";
61 } else if (op == 0xE9 || op == 0xEB) {
62 s = "jmp";
63 } else if ((op & 0xF0) == 0x70) {
64 s = "jcc";
65 } else if (op == 0x0F) {
66 s = "jcc";
67 } else {
68 s = "????";
69 }
70 tty->print("%s (unresolved)", s);
71 }
72 #endif // ndef PRODUCT
74 #ifndef _LP64
75 inline int Assembler::prefix_and_encode(int reg_enc, bool byteinst) { return reg_enc; }
76 inline int Assembler::prefixq_and_encode(int reg_enc) { return reg_enc; }
78 inline int Assembler::prefix_and_encode(int dst_enc, int src_enc, bool byteinst) { return dst_enc << 3 | src_enc; }
79 inline int Assembler::prefixq_and_encode(int dst_enc, int src_enc) { return dst_enc << 3 | src_enc; }
81 inline void Assembler::prefix(Register reg) {}
82 inline void Assembler::prefix(Address adr) {}
83 inline void Assembler::prefixq(Address adr) {}
85 inline void Assembler::prefix(Address adr, Register reg, bool byteinst) {}
86 inline void Assembler::prefixq(Address adr, Register reg) {}
88 inline void Assembler::prefix(Address adr, XMMRegister reg) {}
89 #else
90 inline void Assembler::emit_long64(jlong x) {
91 *(jlong*) _code_pos = x;
92 _code_pos += sizeof(jlong);
93 code_section()->set_end(_code_pos);
94 }
95 #endif // _LP64
97 #endif // CPU_X86_VM_ASSEMBLER_X86_INLINE_HPP